677479 has 8 divisors (see below), whose sum is σ = 746640. Its totient is φ = 614680.

The previous prime is 677473. The next prime is 677531. The reversal of 677479 is 974776.

It is a happy number.

It is not a de Polignac number, because 677479 - 2³ = 677471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077 + ... + 1585.

It is an arithmetic number, because the mean of its divisors is an integer number (93330).

2⁶⁷⁷⁴⁷⁹ is an apocalyptic number.

677479 is a deficient number, since it is larger than the sum of its proper divisors (69161).

677479 is an equidigital number, since it uses as much as digits as its factorization.

677479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 520 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 677479 is about 823.0911249673. The cubic root of 677479 is about 87.8277882096.

It can be divided in two parts, 677 and 479, that added together give a square (1156 = 34²).

The spelling of 677479 in words is "six hundred seventy-seven thousand, four hundred seventy-nine".